textbox

问题 I would like to know how do I change the border color and border width of textbox as something shown below If it is mouse hover I need to display one colour and on mouse down I need to display another colour. Can anyone explain me the detailed process with the source if available. 回答1: You could do the following: Place the TextBox inside a Panel Give the panel 1 pixel padding Set the text dock to Fill Make the text box to have no border Then, handle mouse events on the text box, switch the

问题 I would like to know how do I change the border color and border width of textbox as something shown below If it is mouse hover I need to display one colour and on mouse down I need to display another colour. Can anyone explain me the detailed process with the source if available. 回答1: You could do the following: Place the TextBox inside a Panel Give the panel 1 pixel padding Set the text dock to Fill Make the text box to have no border Then, handle mouse events on the text box, switch the

问题 I need to set a minimum length for a password that can be used in a textbox and then set a label which will say if it meets the minimum number of characters required. I know how to set the limit of characters, what I can't do is the part where it will show in a label as soon as I leave the textbox. I was thinking I need to use an event, like maybe Leave or LostFocus, but it's not working. Please help :( 回答1: Ok, There are plenty of ways to do what you want to achieve. I personally like to a

问题 I need to set a minimum length for a password that can be used in a textbox and then set a label which will say if it meets the minimum number of characters required. I know how to set the limit of characters, what I can't do is the part where it will show in a label as soon as I leave the textbox. I was thinking I need to use an event, like maybe Leave or LostFocus, but it's not working. Please help :( 回答1: Ok, There are plenty of ways to do what you want to achieve. I personally like to a

问题 TextBox's MaxLength was set to 5. It works fine that it does not allows to enter or paste the Text more than the MaxLength . But it allows when the Text is assigned from code. Is it the behavior of TextBox? If it so, How to handle it in a generic way? 回答1: Is it the behaviour of TextBox? yes, it is behaviour of text box. From MSDN This property does not affect characters that are added programmatically. How to handle it in a generic way? You can control it progmatically by first checking the

问题 I need to insert some text as the first character of my textbox when a button is clicked. Here is what I have tried: private void btnInsert_Click(object sender, EventArgs e) { txtMainView.Text.Insert(0, "TEST"); } This fails to insert the text when I click the button. Anyone have an idea what I am doing wrong? 回答1: txtMainView.Text = txtMainView.Text.Insert(0, "TEST"); Strings are immutable in .NET Framework so each operation creates a new instance, obviously does not change original string

问题 I need to insert some text as the first character of my textbox when a button is clicked. Here is what I have tried: private void btnInsert_Click(object sender, EventArgs e) { txtMainView.Text.Insert(0, "TEST"); } This fails to insert the text when I click the button. Anyone have an idea what I am doing wrong? 回答1: txtMainView.Text = txtMainView.Text.Insert(0, "TEST"); Strings are immutable in .NET Framework so each operation creates a new instance, obviously does not change original string

问题 Does anyone have an idea how I can disable Drag & Drop for all my TextBox Elements? I found something here, but that would need me to run a loop for all Elements. 回答1: You can easily wrap what this article describes into a attached property/behaviours... ie. TextBoxManager.AllowDrag="False" (For more information check out these 2 CodeProject articles - Drag and Drop Sample and Glass Effect Samplelink text) Or try out the new Blend SDK's Behaviors UPDATE Also read this article by Bill Kempf

问题 Does anyone have an idea how I can disable Drag & Drop for all my TextBox Elements? I found something here, but that would need me to run a loop for all Elements. 回答1: You can easily wrap what this article describes into a attached property/behaviours... ie. TextBoxManager.AllowDrag="False" (For more information check out these 2 CodeProject articles - Drag and Drop Sample and Glass Effect Samplelink text) Or try out the new Blend SDK's Behaviors UPDATE Also read this article by Bill Kempf

问题 So I'm new to this area. I just want to ask if how can I minimize the use of the code below since I do have 13 textboxes with the same code. Is there a short way to do this? Here's the UserForm that I'm using -> Here's the code Private Sub tb_mtb_KeyUp(ByVal KeyCode As MSForms.ReturnInteger, ByVal Shift As Integer) If Not IsNumeric(tb_mtb.Value) Then MsgBox "Only numbers allowed!", vbOKOnly + vbCritical, "Title" tb_mtb.Value = "" End If End Sub Private Sub tb_fil_KeyUp(ByVal KeyCode As